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How can you arrange 6 coins in 2 rows such that there are 4 coins in each row
There is a prisoner in one room with two guards. One guard stands in a front of the door which will lead prisoner to freedom if he choses that door. That guard tells truth and nothing but the truth. The other one stands in a front of the door which will lead prisoner to 5 years in prison. That one tells only lies. Prisoner can ask one question to one of the guards so the guard could answer Yes or NO. With this question he should find out through which door he should pass(logically that should be the door of freedom).
*Note: He doesn't know the connection between guards and doors(that the guard who tells truth is in a front of the door of freedom and that the other one is in a front of 5 y. in preason), but he does know that one of them tells truth and one doesn't.
The prisoner should ask"what wpuld the other guard say if I ask him which door would lead me to freedom" and go through the other door that he points.
Explanation:If the prisoner asks the question to the liar he would not point to the door that the other prisoner would point,which is the right door.Therefore, he should go through the other door which would lead to his freedom.
If the prisoner asks the question to the guard who tells truth then also he can go through the other door[the door which is not pointed by the guard].
IDIOTIC,
x=0 raise to 0.taking log,
log x=log0 raise to 0 or
log x=0 log0
log x=0[since 0* any number = 0)
but, log 1=0
so, x=1
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